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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 646 · 40 questions
TalentJR

The method (LCM, then take away): Find the LCM of the two bottom numbers. Change each fraction to that bottom number. Subtract the tops, keep the bottom, and simplify.

NameDateTime takenScore ___ / 40
  1. 1.5/6 − 5/8 =
  2. 2.Rohan has a ribbon 2/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  3. 3.Meera has a ribbon 3/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  4. 4.7/9 − 2/3 =
  5. 5.A tank is 2/5 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  6. 6.6/7 − 1/3 =
  7. 7.5/6 − 7/10 =
  8. 8.1/3 − 1/5 =
  9. 9.A bottle has 5/6 litre of juice. Riya drinks 3/4 litre. How much juice is left (in litres)? =
  10. 10.Rohan has a ribbon 8/9 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  11. 11.Diya has a ribbon 8/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  12. 12.3/5 − 1/4 =
  13. 13.A bottle has 4/5 litre of juice. Arjun drinks 1/4 litre. How much juice is left (in litres)? =
  14. 14.3/5 − 1/6 =
  15. 15.A tank is 6/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  16. 16.A bottle has 5/7 litre of juice. Vihaan drinks 1/3 litre. How much juice is left (in litres)? =
  17. 17.7/10 − 1/5 =
  18. 18.A bottle has 3/7 litre of juice. Riya drinks 1/4 litre. How much juice is left (in litres)? =
  19. 19.Ishaan has a ribbon 7/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  20. 20.A tank is 2/3 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  21. 21.5/6 − 4/9 =
  22. 22.A bottle has 5/6 litre of juice. Riya drinks 5/9 litre. How much juice is left (in litres)? =
  23. 23.Riya has a ribbon 5/6 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  24. 24.A bottle has 4/7 litre of juice. Sara drinks 1/4 litre. How much juice is left (in litres)? =
  25. 25.A tank is 5/7 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  26. 26.3/4 − 5/8 =
  27. 27.3/4 − 3/10 =
  28. 28.5/6 − 1/5 =
  29. 29.A tank is 1/3 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  30. 30.3/8 − 1/4 =
  31. 31.3/8 − 1/6 =
  32. 32.Riya has a ribbon 1/2 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  33. 33.Ishaan has a ribbon 6/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  34. 34.7/8 − 1/4 =
  35. 35.A bottle has 3/5 litre of juice. Tara drinks 1/10 litre. How much juice is left (in litres)? =
  36. 36.3/5 − 1/2 =
  37. 37.Ishaan has a ribbon 7/10 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  38. 38.A bottle has 1/2 litre of juice. Meera drinks 4/9 litre. How much juice is left (in litres)? =
  39. 39.3/4 − 3/8 =
  40. 40.2/3 − 3/5 =

Answer key

  1. 5/24
  2. 7/30
  3. 1/20
  4. 1/9
  5. 1/15
  6. 11/21
  7. 2/15
  8. 2/15
  9. 1/12
  10. 2/9
  11. 7/18
  12. 7/20
  13. 11/20
  14. 13/30
  15. 5/14
  16. 8/21
  17. 1/2
  18. 5/28
  19. 3/8
  20. 11/21
  21. 7/18
  22. 5/18
  23. 13/30
  24. 9/28
  25. 1/21
  26. 1/8
  27. 9/20
  28. 19/30
  29. 2/9
  30. 1/8
  31. 5/24
  32. 1/8
  33. 11/21
  34. 5/8
  35. 1/2
  36. 1/10
  37. 3/10
  38. 1/18
  39. 3/8
  40. 1/15

Free fractions lessons, practice and worksheets at talentjr.in/fractions-for-kids